diff --git a/src/autocmd.c b/src/autocmd.c
index d5b1651..d5c61ca 100644
--- a/src/autocmd.c
+++ b/src/autocmd.c
@@ -2310,7 +2310,11 @@
  * Returns allocated string, or NULL for end of autocommands.
  */
     char_u *
-getnextac(int c UNUSED, void *cookie, int indent UNUSED, int do_concat UNUSED)
+getnextac(
+	int c UNUSED,
+	void *cookie,
+	int indent UNUSED,
+	getline_opt_T options UNUSED)
 {
     AutoPatCmd	    *acp = (AutoPatCmd *)cookie;
     char_u	    *retval;